i read somewhere (i think in popular mechanics or pop. sci.) that they had developed circuitry and LED's that can be literally printed onto paper using a special printer. supposedly, it's cheap, too. this will allow us poor folk to get our hands on big screen TV's that are quite literally wallpaper. a good, but very annoying idea.

I think it's a unique idea, considering the fact that your approach requires no external power source (other than ambient light).

An alternative would be solar-powered organic electronics which can be screen printed ... I'm sure someone is working on that, but the difference between this and your idea is that your idea would likely be much cheaper to manufacture. No driving ciruitry would be involved and you would literally just print the stuff on the paper. It might be useful for some niche applications, but in the long run I feel that organic electronics (once perfected ...) will be more useful.